2 years ago

-please help im so dum dum and id like therapy < <<<<<<<<33333333 TYY

Mathematics

1 answer:

Molodets [167]2 years ago

7 0

Answer:

Step-by-step explanation:

-40

−20−8-12

−28−12

-40

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Suppose that 5 J of work is needed to stretch a spring from its natural length of 30 cm to a length of 39 cm.

vesna_86 [32]

Answer

given,

work = 5 J

spring stretch form 30 cm to 39 cm

$W = \dfrac{1}{2}kx^2$

x = 0.39 - 0.30 = 0.09 m

$5 = \dfrac{1}{2}k\times 0.09^2$

$k = \dfrac{5\times 2}{0.09^2}$

k = 1234.568 N/m

a) work when spring is stretched from 32 cm to 34 cm

x₂= 0.34 -0.30 = 0.04 m

x₁ = 0.32 - 0.30 = 0.02

$W = \dfrac{1}{2}k(x_2^2-x_1^2)^2$

$W = \dfrac{1}{2}\times 1234.568 \times (0.04^2-0.02^2)^2$

W = 0.741 J

b) F = k x

25 = 1234.568 × x

x = 0.0205 m

x = 2.05 cm

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3 years ago

Fill in the table using this function rule. y= -6x+1

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Take a picture of the table

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3 years ago

Solve I2 x- 2I < 8 O [xl-3 <x<5) XIX<-3 or x>5) {xl-5 <x<3)

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Answer: Its b also y u test so ez what grade u in lol?

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3 years ago

Which rigid transformation(s) would map ΔJKL onto ΔPQR? a reflection only a rotation only a rotation and a reflection a translat

solniwko [45]

Step-by-step explanation:

A rigid transnformation is also know as isometrie. This are transformations of the plane that preserves the lengths. There are 3 types of isometries and each one can be combined with the others.

Reflection (First figure)
Translation (second figure)
Rotation (third figure)

Combining this transformations you will be able to transform ΔJKL onto ΔPQR

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No, because 13.2 times 6=79.2
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